import axios from 'axios'
import { Message } from 'element-ui'
import store from '@/store'
import { getToken } from '@/utils/auth'

// create an axios instance
const service = axios.create({
  baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
  // withCredentials: true, // send cookies when cross-domain requests
  timeout: 0 // request timeout
})

// request interceptor
service.interceptors.request.use(
  config => {
    // do something before request is sent

    if (store.getters.token) {
      // let each request carry token
      // ['Authorization'] is a custom headers key
      // please modify it according to the actual situation
      config.headers['Authorization'] = 'Bearer ' + getToken() // 让每个请求携带自定义token 请根据实际情况自行修改
    }

    return config
  },
  error => {
    // do something with request error
    console.log(error) // for debug
    return Promise.reject(error)
  }
)

// response interceptor
service.interceptors.response.use(
  /**
   * If you want to get http information such as headers or status
   * Please return  response => response
   */

  /**
   * Determine the request status by custom code
   * Here is just an example
   * You can also judge the status by HTTP Status Code
   */
  response => {
    const res = response.data

    if (response.data instanceof Blob) {
      if (response.headers['content-type'].indexOf('application/json') !== -1) {
        var blobReader = new Response(response.data).json()
        blobReader.then(res => {
          Message.error(res.msg)
        })
        return Promise.reject(res.msg)
      } else {
        return response
      }
    } else {
      if (res.code !== 200) {
        // 402: token已失效; 403:用户未登录、未携带token;  405:用户在另一台设备上登陆;
        if (res.code === 402 || res.code === 403 || res.code === 405) {
          Message.error(res.msg)
          store.dispatch('user/FedLogOut').then(() => {
            location.reload() // 为了重新实例化vue-router对象 避免bug
          })
        } else {
          Message({
            message: res.msg,
            type: 'error',
            duration: 5 * 1000
          })
        }

        return Promise.reject(res.msg)
      } else {
        return response.data
      }
    }
  },
  error => {
    console.log('err' + error) // for debug
    Message({
      message: error.message,
      type: 'error',
      duration: 5 * 1000
    })
    return Promise.reject(error)
  }
)

export default service
